Home / 20,980.96-31,471.62-6,190.14

Finding the Fourth Proportional to 20,980.96, 31,471.62 and 6,190.14

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Solution

The fourth proportional to 20,980.96, 31,471.62 and 6,190.14 is: 9,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.96 : 31,471.62 = 6,190.14 : x
  2. Step 2: Convert to fraction form
    20,980.96/31,471.62 = 6,190.14/x
  3. Step 3: Cross multiply
    20,980.96x = 31,471.62 × 6,190.14
  4. Step 4: Simplify right side
    20,980.96x = 194,813,733.83
  5. Step 5: Solve for x
    x = 194,813,733.83/20,980.96
  6. Step 6: Final answer
    x = 9,285.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.